Gustave Le Bon was a French polymath whose areas of interest included anthropology, psychology, sociology, medicine, invention, and physics. He is best known for his 1895 work "The Crowd: A Study of the Popular Mind", which is considered one of the seminal works of crowd psychology. Other than the cover suggests, this book does not deal with the Russian Revolution, but revolutions and their pre-conditions in general. Le Bon who grew up in France during the revolutionary wave that was pravelent in Europe in the mid 19th century uses in this book the French Revolution as his study case.